Excavating-machine.



C. F. RAYBURN.

EXCAVATING MACHINE. 1.

APPLICATION F|LEDJuNEl8.1 9|7.

1,252,175.' Patented Jan. 1,191.8.

3 B HEETSHEET l.

C. F. RAYBURN.

EXCAVATING MACHINE.

APPLxcATloN F|LEDJuNE1B,191.

1,252,175. Patented Jan. 1;,1918.

3 SHEETS-SHEET 2.

' run STATES rafrninfr @Non .CHARLES FRANK '.RAYIBURN, OF MOSCOW, IDAHO.

rxcava'riNef-Mnourris.v I

To all whom it may concern y Be it known that I, CHARLES FRANK RAY- BURN, a citizen of the United States, and a;

resident of Moscow, in the county of Latah and State of Idaho, have invented certainI` new and useful Improvements in EXcayating-Machines, of which the following v1s a specification.

My invention is an improvement inv eXcaw vating machinery of that type in which the and has for its obj ect to provide mechanism of theccharacter specified wherein thel digging and the dumping are accomplished without the use ofltripping mechanism or' the like. I'

In the drawings: y

Figure l'is a side view of the improved mechanism during transportation;

Fig.V 2 is a section on the line 2-'2 of Fig. 1, looking in the direction of the arrow adjacent the line Fig. 3 is a view similar toFig. 1, with the parts in dumping position;

Fig. 4 is a top plan view;

Fig. -5 is a front view;

Fig. 6 is a rear View.

In the present embodiment of the invention, the excavator is supported by a slack cable la, the said cable being 'anchored at one end and being connected to the rear drum of a hoisting engine at the other. A carriage is mounted to run upon the cable, and a scoop or bucket is connected with the carriage. The carriage comprises a pairvof spaced side bars 1, of channel material, which are o'set inwardly at their front ends, as indicated at 2, and the said bars are connected at their rear ends by a cross bar 3.

A pair of upwardly and inwardly extending brackets 4 is connected with the cross bar 3 at the ends thereof, and plates 5 are i connected to the inner faces of the brackets at their top, the said plates extending forwardly and downwardly to a connection with a longitudinal tie bar 6 arranged between the side bars, and extending at its forward end between the inwardly offset ends 2 of the side bars,.to which the said tie bar is connected.

A pulley 7 is journaled between the plates 5 and the braces 4, and cross plates 8 are secured to the inner faces of the portions 2 ofthe side bars at their front ends, the

Specification of Letters Patent.

. Patented Jan. 1,1918..l Appiieation filed :une 181917. l' seriai No. 175,347.'

bars 1i Pulleys Q and 1() are journaled be# tween the ends vof the "plates, above and Vbe-v` low the bars' 1 andv 2, respectively, and the PUHLYS 7 and 9 run upon the 'Cable lato support the carriage.

The bucket or' scoop comprises a bottom 11, vsideV walls 12and a rear'wall13, and

pivot plates 14'are riveted tothe side walls near the rearwall, and the'said plates eX- jtend upwardly and are pii'iotallyconnected 'tothe side bars of the carriage, as indicated at 15. `Spades 16 are secured tothe frontv end of thebottom, and it will be noticed that the sidewalls 12 extend' well beyond theA vbottom at,..the front, and wellbeyond the The 'side walls are connected at Y theirfront ends by across plate 17, and this spades.

plate has 'atfits4v center upstanding lugs 18,

between which is journaled a pulley 19.

The .plate 17 has an inclinedl extension and the extension is braced yand connected to thel side walls intermediate their' ends by a. substantiallyv U-shaped member 21.

The'body of the ysaid member is con- "tionlof Fig. 3it will be obvious that mud and the like may fall forward into the pulley, and this mud is carried up by the chain to the pulley 10. The provision of the shield plate 20 permits the scraping of a larger load and without any danger of blockading the action of the device.

A drag line or hauling cable is connected with a ring 22, and from this ring extends a chain 28, which passes over the pulley 10 and downwardly beneath the pulley 19, and upwardly to a connection with the carriage at the pulley 10. Bridle chains 24 extend from the ring to opposite sides ofthe scoop or bucket, the said bridle chains being connected to the side walls of the scoop or bucket, as indicated at 25.

A pulley 26 is journaled between the plates 5 below the cable 1a, for engaging the under side of the said cable during the transportation of the scoop or bucket.

In operation, the drag line connected to 2O at'its rear edge, the'said extension eX- l tending at an oblique angle to' the plate,

' dumping positionfis reached, the .engineer slackens the dragiline, and the parts immethe ring`22 winds upon the frontidium of the hoisting engine,'while the adJacenten'd' of the line 1a Winds unen-the nearjdrum.. In` order to operate the device, the engineer starts his engine, throws in the `'cljutchof the front drum, pulling the drag line taut and v the ,bucket forward. At thismomen-t all the strain falls on the bridle chains .24, and the bucket is filled, the line la being slack .at this time ,in order that the bucket may'enter the pit. With thebuc'liet full, the cable la is y tautened by .throwing 1in the clutch lon the rear frame, and withlthe tautf ening of the cable the dumping apparatus is lifted. The drag linel is still taut, and the strain s on the line y0I' chain 23. When diately take the position of'pFi/g. 3.

Thus thedrzag line serves. three purposes, as a .loading line, 4as :a .pulling line and as a dumping line. Dumping is accomplished .at a'lhigh rate of speed, since it is not neces@ sary Itoslow Aup .5to hit a trip ing n device, .nor is there anyfstrain on the ueket, since ino tripping .device 'is to be stretched. y Dumping is accomplished `at any .timeandatany place, merely lby relaiingY 4the tension onthe drag line. The .digging apparatus: returns to. 4digging position .by gravity.

With 'the improved bucket, YK the )operation of vloading and dumpingis ,greatly facilitated, since the .Speedway be :constant land at thejhighest possible rate at all times.

' I claim:

1, In an excavating machine, the combina.- tion of La transporting .cableway, suitable .support'for said cableway, a traveling. plati form .suspended yfrom A'said cablewayl and having connection-therewith by fmeans-.0f

grooved wheels for traveling thereon, a.

rear end of :said platform suspended therefrom, a grooved wheel journaled be- .tween brackets mountedcupon the forward end of said digging member and secured thereto, a grooved wheel journaled between brackets secured to said platform and eX- tend-ing-below the forward end thereof, va'

hauling vcable .secured to the forward end of said llg'ilat'forrn and in engagement with said grooved wheels Afor suspending `the forward end ofv saidw digging VVmember from said platform and drawing them near together,` and for hauling them valong'sai'd cableway', substantially as shown and described, a shieldVarrangedv--in rear of the grooved wheelv at the forward vendof the digging: member for preventing vmud and the like fromfalling .upon the said pulley.

supported traveling platform, a `rectangular excavating bucket depending fromV the rear` end ofsaid platform' and hinged thereto, a y

Stirrup shaped piece secured tothe upper part vof the rear portion of saidbucket andA extending l across the top thereof, @shieldpiece secured to thezupzper front portion `.of 1

their upper ends, cable connection; between said wheeland a similar wheel depending from said travelingplatform, and jabridlejl yhaving its ends secured to thefront; end Iof said bucket and itslcfenter in :articulation .with said cable connection.

Witnesses;` l l 'i J.V' S'. BUCHANAN, y, ELsIE RYAN.

CHAs. FRANK RArBUn-N; Y

Washington, D. C.

' Copies of 'this patent .may be v.obtained foren-ve cents eaclnhy addressing the Commissioner ofv Patents,v

e0 V2` Inanexcavating machine with a cable 

